For music schools, and composition majors in particular, the success factor tends to be measured by the amount of top-tier films scored by their graduates.
In order to find out whose graduates score the highest number of the most successful films, I took into account the top 20 movies at the 2019 Worldwide Box Office Rating of films, provided by
Box Office Mojo, and looked at the composers of those motion pictures and their Alma Maters.